CN1080567A - A kind of synthetic and application that improves the flotation agent of recovery of gold and silver - Google Patents
A kind of synthetic and application that improves the flotation agent of recovery of gold and silver Download PDFInfo
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- CN1080567A CN1080567A CN 92106986 CN92106986A CN1080567A CN 1080567 A CN1080567 A CN 1080567A CN 92106986 CN92106986 CN 92106986 CN 92106986 A CN92106986 A CN 92106986A CN 1080567 A CN1080567 A CN 1080567A
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- gold
- silver
- flotation agent
- recovery
- synthetic
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Abstract
A kind of flotation agent of raising recovery of gold and silver is characterized in by urea element and C
5-C
10Straight chain alcohol be synthesized into powder product with 1: 0.2-1.0 ratio at a certain temperature, or by C
4Alcohol and C
6-C
8Straight chain alcohol synthesize with the urea element again after mixing with 1: 0.1-1.5 ratio.This flotation agent all has certain collecting power to the mineral of gold, silver and bronze, and collecting agents such as itself and conventional xanthate use with 1: 3-7 ratio compatibility, can make the rate of recovery of gold and silver in concentrate improve 3-39%, is a kind of comparatively desirable gold and silver flotation agent.
Description
The invention provides a kind of synthetic method and application that can improve the flotation agent of recovery of gold and silver, belong to the metalliferous mineral floating agent.
Gold and silver ore flotation is both at home and abroad at present generally used to contain S
2+Xanthate (ROCSSMe, R is generally C in the formula
2-C
6Alkyl, Me is K or Ma) or black powder (R202PSSMe, R is cresyl or C in the formula
2-C
4Alkyl, Me is H, Ma or MH
4) make collecting agent, between 60-80%, the rate of recovery of silver is low to moderate 25-30% to gold recovery sometimes usually, and xanthate also has very strong collecting effect to the iron sulfide of association, contains Gold Concentrate under Normal Pressure grade and smelting recovery thereby reduce.Though butyl ammonium aerofloat to the collecting power of iron sulfide a little less than, and also the raising to recovery of gold and silver is slightly beneficial sometimes, its price is higher, and is not strong to the adaptability of ore.
Purpose of the present invention aims to provide a kind of, unconventional collecting agent that selectivity good strong to gold silver mineral flotation collecting power, improving the rate of recovery of gold and silver ore flotation, thereby and reduce the impurity content that contains in the Gold Concentrate under Normal Pressure as far as possible and improve and contain Gold Concentrate under Normal Pressure and (comprise Gold Concentrate under Normal Pressure, gold and silver concentrate, golden copper concentrate ...) grade.
Technical solution of the present invention is: collecting agent of the present invention is to react at a certain temperature with urea element and alcohols to be synthesized into (product code name HA, the i.e. plain and alcohols english abbreviation of urea), and used alcohols is C
5-C
10Straight chain alcohol, the plain mol ratio with alcohol of urea is 1 when synthetic: 0.2-1.0, the process of synthetic reaction is as follows: place vessel in heating to 50-95 ℃ alcohol earlier, slowly add the urea element then, the two dissolves each other earlier, after about ten minutes, the crystallization of white needles appears, crystallization has become pasty state from less to more at last, with its direct gravity filtration or dry at a certain temperature, bake out temperature should be lower than 100 ℃, make product become white powder, be the present invention's flotation agent product, store in the port grinding bottle standby.After a few days, product of the present invention may oxidation and show khaki, but does not influence its performance.
Another embodiment of the present invention is with C
4Alcohol and C
6-C
8Straight chain alcohol with 1: the ratio of 0.5-1.5 is mixed the back and is synthesized with aforementioned proportion and synthetic method with the urea element, also can realize the object of the invention.
As everyone knows, when urea element and alcohols use separately, the mineral of gold, silver, copper are not all had collecting power, but adopt product that synthetic method of the present invention makes that the mineral of gold, silver, copper are all had certain collecting power.Found through experiments, if single mineral with a small amount of product flotation gold, silver and bronze of the present invention, metal recovery rate is not so good as and shared height such as conventional xanthate.But when compatibilities such as it and xanthate are used, the rate of recovery of gold and silver in concentrate than single with the high 3-39% of xanthate.Therefore, compatibilities such as product of the present invention and xanthate use better, and its ratio with the consumption of xanthate is 1: 3-7.Compare with xanthate, flotation agent of the present invention is very weak to the collecting power of the iron sulfide mineral of association, and the minority nonmetallic mineral is had certain collecting power, so consumption is unsuitable excessive, otherwise can make the grade of concentrate influenced.
Embodiment:
Mixture (C with fourth, penta, own xanthate (fourth, penta, oneself be the number of C among the R, down with) and ethyl xanthogenate
4Above xanthate consumption is 1: 1 with the ratio of lead ethyl xanthate consumption) adopt to add flotation agent of the present invention or not add and compare test (this flotation agent is employing urea element and C
6Straight chain alcohol be synthesized into), respectively the low-sulfur gold ore in Anhua, flotation Hunan and high-sulfur (3.6-3.9%) the gold, silver and bronze ore of Jiangxi Dexing Copper Mine, results of comparison illustrates that flotation agent of the present invention plays good effect to the rate of recovery that improves gold, silver and bronze.
With the ore in the floating Anhua of fourth ethyl xanthogenate mixture or own ethyl xanthogenate mixture, make the rate of recovery of gold improve 36-39% after adding flotation agent of the present invention (10g/t).
Ore with fourth second, penta second, own second, the floating Dexing of penta own xanthate mixture, in four groups of contrast tests that add flotation agent of the present invention (10g/t) and do not add, have three groups of flotation agent of the present invention to be positive-effect, make the rate of recovery of gold in concentrate improve 2-3%, the rate of recovery of silver then improves more than 3.6%.
With butyl xanthate and slope, Tongbai silver hole, the floating Henan of butyl ammonium aerofloat ore, add flotation agent (C of the present invention
6-C
9The plain product of alcohols and urea) make the rate of recovery of gold improve 2-5% with the contrast that does not add.
Claims (3)
1, a kind of flotation agent that improves recovery of gold and silver is synthetic, it is characterized in that this flotation agent is by urea element and C
5-C
10Straight chain alcohol be synthesized into, the urea element is 1 with the ratio of alcohols: 0.2-1.0, synthesis temperature are 50-95 ℃.
2, synthetic according to the described flotation agent of claim 1 is characterized in that this flotation agent is by C
4Alcohol and C
6-C
8Straight chain alcohol with 1: plain synthetic with urea again after the ratio of 0.1-1.5 is mixed.
3, synthesizing according to claim 1 or 2 described flotation agent, it is characterized in that synthetic reaction process is earlier alcohol to be heated to relevant temperature, slowly adding the urea element then reacts, the two dissolves each other earlier, become acicular crystal then gradually, be product of the present invention with its isolated by filtration or in drying below 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106986 CN1080567A (en) | 1992-06-27 | 1992-06-27 | A kind of synthetic and application that improves the flotation agent of recovery of gold and silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106986 CN1080567A (en) | 1992-06-27 | 1992-06-27 | A kind of synthetic and application that improves the flotation agent of recovery of gold and silver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1080567A true CN1080567A (en) | 1994-01-12 |
Family
ID=4942605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106986 Pending CN1080567A (en) | 1992-06-27 | 1992-06-27 | A kind of synthetic and application that improves the flotation agent of recovery of gold and silver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700369A (en) * | 1997-01-14 | 1997-12-23 | Guangzhou Institute Of Geochemistry Chinese Academy Of Sciences | Process for adsorboaggregational flotation of Carlin type natural gold ore dressing |
-
1992
- 1992-06-27 CN CN 92106986 patent/CN1080567A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700369A (en) * | 1997-01-14 | 1997-12-23 | Guangzhou Institute Of Geochemistry Chinese Academy Of Sciences | Process for adsorboaggregational flotation of Carlin type natural gold ore dressing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |